Therefore, it comes to an open question: Does learned video compression method really need such a complex framework? At first glance, the answer seems to be of course YES. Obviously, the advance of this framework has been proved over the last decades. However, we have a different view in this paper. Our inspiration comes from the development of learned image compression: some learning-based methods achieved more remarkable performance with only a simple yet powerful entropy model [1]}, [2]}, [3]}, [4]} without following the advanced image codec schemes.
Following this phenomenon, it is natural to expect that a similar simple framework (e.g., an appropriate spatiotemporal entropy model) may be also good enough for learned video compression.
